package com.mr.web.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.lang.StringUtils;

import com.mr.model.Config;

public class AuthFilter implements Filter {
	public void init(FilterConfig config) throws ServletException {

	}
	public void doFilter(ServletRequest req, ServletResponse res,
			FilterChain filter) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) req;
		HttpServletResponse response = (HttpServletResponse) res;
		HttpSession session = request.getSession();
		String authName = (String) session.getAttribute(Config.AUTHNAME);
		if(StringUtils.isBlank(authName)) {
			response.sendRedirect(Config.PROJECT_NAME + "index.xhtml");
		}else {
			filter.doFilter(req, res);
		}
	}

	public void destroy() {

	}
}
